In Linux Mint 22.1, the dark theme is no longer visually consistent.

In Linux Mint 22.1 using a default Mint-Y dark theme, the panel is no longer visually consistent with the rest of the system. Applets on the panel use the older, lighter coloring, as does every other program opened that uses the GTK theme.
In LM 22, before these changes were made, this inconsistency did not exist. The panel was the same lighter gray as the rest of these elements.
As well, as was noted in #488, the new dialogs look completely out of place next to the rest of the system.
I'd like to see the panel color and dialog theming changed to match the lighter gray of LM's otherwise beautiful dark theme.
I am not requesting that the dialogs be entirely reverted to how they were before- they were very outdated, as was said in the update post. I'd just like to see the colors (and maybe the appearance?) changed.
The panel's coloring (as well as the appearance of the corner bar, which no longer has the margins it did before) should be reverted.

No file or test is named. Start by locating the Mint-Y dark-theme definitions for the panel, applets, dialogs, and corner bar, then compare their styling with the rest of the Linux Mint 22.1 dark theme. Done means the panel and dialogs use the requested lighter gray consistently and the corner bar has its previous margins.